dcmpo

Decimal Compare Ordered

dcmpo BF, FRA, FRB

Compares two decimal floating-point operands and updates the condition register.

Encoding

Binary Layout

59

0:5

BF

6:8

/

9:10

FRA

11:15

FRB

16:20

130

21:30

/

31

 

Format X-form

Opcode 0xEC000104

Extension Decimal Floating-Point

Operands

• BF
  CR Field
• FRA
  Src A
• FRB
  Src B

Example

dcmpo cr0, f2, f3

Registers Altered

CR, FPSCR

Related

More in Decimal Floating-Point

Reference

View in PowerISA v3.1C Specification ↗ OPF Power ISA v3.1C

Description

The DFP operand in FRA is compared to the DFP operand in FRB. The result of the compare is placed into CR field BF and the FPCC.

Operation

f1 <- DFP_operation(f2, f3)

Programming Note

dcmpo[q] are treated as Floating-Point instructions in terms of resource availability.